Home / 22,730.40-31,345.92-13,779.36

Finding the Fourth Proportional to 22,730.40, 31,345.92 and 13,779.36

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Solution

The fourth proportional to 22,730.40, 31,345.92 and 13,779.36 is: 19,002.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,730.40 : 31,345.92 = 13,779.36 : x
  2. Step 2: Convert to fraction form
    22,730.40/31,345.92 = 13,779.36/x
  3. Step 3: Cross multiply
    22,730.40x = 31,345.92 × 13,779.36
  4. Step 4: Simplify right side
    22,730.40x = 431,926,716.21
  5. Step 5: Solve for x
    x = 431,926,716.21/22,730.40
  6. Step 6: Final answer
    x = 19,002.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.